Carton partition unit



FIG. 1 is a top perspective view of a carton partition unit showing my new design;

FIG. 2 is an end elevation view, both end elevation views being identical;

FIG. 3 is a side elevation view, both side elevation views being identical; and,

FIG. 4 is a bottom plan view. 

The ornamental design for a carton partition unit, as shown and described. 